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Makrolon® Clear 099 has a fire rating to UL94 V0 in the USA and to EN 13501 (B s1 d0) in Europe.\u003c\/p\u003e\n\u003cp\u003ePlease note: These safety covers are not suitable for bakeout and must be removed before baking the system. During bake-out, the vacuum viewport should be covered by a layer of aluminium foil to minimise temperature differentials.\u003c\/p\u003e\n\u003cdiv class=\"et_pb_column et_pb_column_1_2 et_pb_column_3  et_pb_css_mix_blend_mode_passthrough\"\u003e\n\u003cdiv class=\"et_pb_module et_pb_text et_pb_text_3  et_pb_text_align_left et_pb_bg_layout_light\"\u003e\n\u003cdiv class=\"et_pb_text_inner\"\u003e\n\u003cp class=\"x_MsoNormal\"\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"4VISA","offers":[{"title":"CF38 \/ VPZ38 viewport safety cover","offer_id":57698042839365,"sku":"1","price":46.0,"currency_code":"GBP","in_stock":true},{"title":"CF64 \/ VPZ64 viewport safety cover","offer_id":57698042872133,"sku":"1","price":47.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0937\/3492\/8709\/files\/Viewport-Safety-Covers-1.png?v=1776287981"},{"product_id":"iso63fx25-iso63k-flexible-hose-copy","title":"DN16CF Edge-Welded Bellows","description":"\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'DIN Next LT Arabic Medium',sans-serif;\"\u003eMaterial: 304L Flanges \/ 316L Bellows\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'DIN Next LT Arabic Medium',sans-serif;\"\u003eExcellent corrosion resistance. Not recommended for use with hydrochlorides or halides.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'DIN Next LT Arabic Medium',sans-serif;\"\u003eHelium (He) Leak Rate \u0026lt;1x10^-10 mbar L\/s\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'DIN Next LT Arabic Medium',sans-serif;\"\u003eRated for UHV\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'DIN Next LT Arabic Medium',sans-serif;\"\u003e10,000 cycles service life\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'DIN Next LT Arabic Medium',sans-serif;\"\u003e2x DN16CF Rotatable Flange with Clearance Bolt Holes\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'DIN Next LT Arabic Medium',sans-serif;\"\u003eLength: 110mm-375mm.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'DIN Next LT Arabic Medium',sans-serif;\"\u003eAxial stroke: 265mm\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'DIN Next LT Arabic Medium',sans-serif;\"\u003eMin ID: 16mm\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'DIN Next LT Arabic Medium',sans-serif;\"\u003eMax OD: 34mm\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'DIN Next LT Arabic Medium',sans-serif;\"\u003eOperational Temperature: 20°C\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'DIN Next LT Arabic Medium',sans-serif;\"\u003eMax Bakeout: 80°C\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'DIN Next LT Arabic Medium',sans-serif;\"\u003e--------\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'DIN Next LT Arabic Medium',sans-serif;\"\u003eEdge-welded bellows are used to provide \u003cb\u003eflexible, leak-tight motion \u003c\/b\u003ein demanding vacuum and pressure environments. They are particularly suited to \u003cb\u003eultra-high vacuum (UHV) systems\u003c\/b\u003e where minimal outgassing, high cleanliness, and long fatigue life are essential. Typical applications include linear motion feedthroughs, thermal expansion compensation, vibration isolation, pressure boundary sealing, and alignment mechanisms in vacuum chambers.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'DIN Next LT Arabic Medium',sans-serif;\"\u003eThese bellows are manufactured from \u003cb\u003eprecision-stamped AISI 316L diaphragms\u003c\/b\u003e, edge-welded to form a robust yet highly flexible assembly. They are also fitted with \u003cb\u003eAISI 304L rotatable CF16 flanges (clearance bolt holes)\u003c\/b\u003e and incorporate \u003cb\u003einternal AISI 304 support rings\u003c\/b\u003e, allowing the use of a \u003cb\u003ecentral shaft up to Ø15 mm\u003c\/b\u003e while maintaining stability and preventing buckling under vacuum or differential pressure.\u003cb\u003e\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'DIN Next LT Arabic Medium',sans-serif;\"\u003eThe use of 300 series low-carbon stainless steels ensures \u003cb\u003eexcellent corrosion resistance and weld integrity\u003c\/b\u003e, as well as low magnetic permeability and suitability for clean vacuum environments. However, these bellows are not recommended for use with hydrochlorides or halides.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'DIN Next LT Arabic Medium',sans-serif;\"\u003eAll bellows are \u003cb\u003esupplied UHV-clean\u003c\/b\u003e, with plastic protective caps fitted to the flanges and sealed in a clean bag to prevent contamination prior to installation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan style=\"font-family: 'DIN Next LT Arabic Medium',sans-serif;\"\u003eKey Features\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cul style=\"margin-top: 0cm;\" type=\"disc\"\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list 36.0pt;\"\u003e\u003cspan style=\"font-family: 'DIN Next LT Arabic Medium',sans-serif;\"\u003eEdge-welded construction for high flexibility and long cycle life\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list 36.0pt;\"\u003e\u003cspan style=\"font-family: 'DIN Next LT Arabic Medium',sans-serif;\"\u003eSuitable for ultra-high vacuum (UHV) and high-purity applications\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list 36.0pt;\"\u003e\u003cspan style=\"font-family: 'DIN Next LT Arabic Medium',sans-serif;\"\u003eInternal support rings for guided shafts up to Ø15 mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list 36.0pt;\"\u003e\u003cspan style=\"font-family: 'DIN Next LT Arabic Medium',sans-serif;\"\u003eExcellent corrosion resistance (material-dependent)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list 36.0pt;\"\u003e\u003cspan style=\"font-family: 'DIN Next LT Arabic Medium',sans-serif;\"\u003eLow outgassing, vacuum-compatible materials\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list 36.0pt;\"\u003e\u003cspan style=\"font-family: 'DIN Next LT Arabic Medium',sans-serif;\"\u003eSupplied clean, capped, and sealed for immediate use\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan style=\"font-family: 'DIN Next LT Arabic Medium',sans-serif;\"\u003eTypical Applications\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cul style=\"margin-top: 0cm;\" type=\"disc\"\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l3 level1 lfo2; tab-stops: list 36.0pt;\"\u003e\u003cspan style=\"font-family: 'DIN Next LT Arabic Medium',sans-serif;\"\u003eUHV linear and rotary motion systems\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l3 level1 lfo2; tab-stops: list 36.0pt;\"\u003e\u003cspan style=\"font-family: 'DIN Next LT Arabic Medium',sans-serif;\"\u003eVacuum feedthroughs and manipulators\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l3 level1 lfo2; tab-stops: list 36.0pt;\"\u003e\u003cspan style=\"font-family: 'DIN Next LT Arabic Medium',sans-serif;\"\u003eThermal expansion compensation in vacuum lines\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l3 level1 lfo2; tab-stops: list 36.0pt;\"\u003e\u003cspan style=\"font-family: 'DIN Next LT Arabic Medium',sans-serif;\"\u003ePrecision instrumentation and research equipment\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l3 level1 lfo2; tab-stops: list 36.0pt;\"\u003e\u003cspan style=\"font-family: 'DIN Next LT Arabic Medium',sans-serif;\"\u003eSemiconductor, surface science, and accelerator systems\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'DIN Next LT Arabic Medium',sans-serif;\"\u003e--------\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan style=\"font-family: 'DIN Next LT Arabic Medium',sans-serif;\"\u003eMaterials Available\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'DIN Next LT Arabic Medium',sans-serif;\"\u003eBellows can be supplied in the following materials to suit specific mechanical, thermal, or corrosion requirements:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul style=\"margin-top: 0cm;\" type=\"disc\"\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l1 level1 lfo3; tab-stops: list 36.0pt;\"\u003e\u003cspan style=\"font-family: 'DIN Next LT Arabic Medium',sans-serif;\"\u003eAISI 304L\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l1 level1 lfo3; tab-stops: list 36.0pt;\"\u003e\u003cspan style=\"font-family: 'DIN Next LT Arabic Medium',sans-serif;\"\u003eAISI 316L\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l1 level1 lfo3; tab-stops: list 36.0pt;\"\u003e\u003cspan style=\"font-family: 'DIN Next LT Arabic Medium',sans-serif;\"\u003eAM350\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l1 level1 lfo3; tab-stops: list 36.0pt;\"\u003e\u003cspan style=\"font-family: 'DIN Next LT Arabic Medium',sans-serif;\"\u003eInconel® 625\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l1 level1 lfo3; tab-stops: list 36.0pt;\"\u003e\u003cspan style=\"font-family: 'DIN Next LT Arabic Medium',sans-serif;\"\u003eInconel® 718\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l1 level1 lfo3; tab-stops: list 36.0pt;\"\u003e\u003cspan style=\"font-family: 'DIN Next LT Arabic Medium',sans-serif;\"\u003eHastelloy® C-276\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan style=\"font-family: 'DIN Next LT Arabic Medium',sans-serif;\"\u003eSizes and Availability\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cul style=\"margin-top: 0cm;\" type=\"disc\"\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l2 level1 lfo4; tab-stops: list 36.0pt;\"\u003e\u003cspan style=\"font-family: 'DIN Next LT Arabic Medium',sans-serif;\"\u003eVarious \u003cb\u003eflange sizes (nominal bores)\u003c\/b\u003e and \u003cb\u003eoverall lengths\u003c\/b\u003e are available\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l2 level1 lfo4; tab-stops: list 36.0pt;\"\u003e\u003cspan style=\"font-family: 'DIN Next LT Arabic Medium',sans-serif;\"\u003eCustom configurations available on request\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l2 level1 lfo4; tab-stops: list 36.0pt;\"\u003e\u003cspan style=\"font-family: 'DIN Next LT Arabic Medium',sans-serif;\"\u003eItems not held in stock we can typically supply within \u003cb\u003e6 weeks\u003c\/b\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'DIN Next LT Arabic Medium',sans-serif;\"\u003ePlease \u003cb\u003eenquire for availability, custom dimensions, or material options\u003c\/b\u003e, and our technical team will be happy to assist with selection for your application.\u003c\/span\u003e\u003c\/p\u003e","brand":"4VISA","offers":[{"title":"Default Title","offer_id":57769065840965,"sku":"1","price":1200.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0937\/3492\/8709\/files\/ISO63FX25.png?v=1764795802"},{"product_id":"metric-viton-75-o-rings","title":"Viton™ (fluoroelastomer) O-rings for vacuum pumps.","description":"\u003cp\u003eViton™ (fluoroelastomer) O-rings - replacement seals for vacuum pumps.\u003c\/p\u003e\n\u003cp\u003eExcellent chemical, thermal and oxidation resistant properties.\u003c\/p\u003e\n\u003cp\u003eHardness (Shore A) 75+\/-5.\u003c\/p\u003e\n\u003cp\u003eTemperature range of -15 °C to 200 °C.\u003c\/p\u003e\n\u003cp\u003ePressure range 10\u003csup\u003e-7\u003c\/sup\u003e mbar to 1 bar absolute.\u003c\/p\u003e","brand":"4VISA","offers":[{"title":"2mm diameter x 1mm section","offer_id":57864219558213,"sku":"1","price":0.6,"currency_code":"GBP","in_stock":true},{"title":"5mm diameter x 1.5mm section","offer_id":57864219590981,"sku":"1","price":0.48,"currency_code":"GBP","in_stock":true},{"title":"6mm diameter x 2.2mm section","offer_id":57864219623749,"sku":"1","price":0.66,"currency_code":"GBP","in_stock":true},{"title":"8mm diameter x 2mm section","offer_id":57864219656517,"sku":"1","price":0.6,"currency_code":"GBP","in_stock":true},{"title":"10.6mm diameter x 2.4mm section","offer_id":57864293482821,"sku":"1","price":0.54,"currency_code":"GBP","in_stock":true},{"title":"15mm diameter x 1.5mm section","offer_id":57864293843269,"sku":"1","price":0.6,"currency_code":"GBP","in_stock":true},{"title":"15mm diameter x 2.5mm section","offer_id":57864294269253,"sku":"1","price":0.9,"currency_code":"GBP","in_stock":true},{"title":"16mm diameter x 1mm section","offer_id":57864294924613,"sku":"1","price":0.9,"currency_code":"GBP","in_stock":true},{"title":"22mm diameter x 1.5mm section","offer_id":57864295186757,"sku":"1","price":1.05,"currency_code":"GBP","in_stock":true},{"title":"24mm diameter x 2.5mm section","offer_id":57864295285061,"sku":"1","price":1.2,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0937\/3492\/8709\/files\/kf40nr_render_e3abfb62-5f53-4e0b-b9e3-7bfb7ba6bf79.png?v=1752612433"}],"url":"https:\/\/www.4visa.co.uk\/collections\/vacuum-hardware-in-stock.oembed?page=2","provider":"4VISA","version":"1.0","type":"link"}